"SACRAMENTO, Calif. -- Ending a mystery that captivated the run-up to Election Day, the Arizona group behind an anonymous $11 million donation revealed under court order Monday that the shadowy donation was laundered through two groups, including one tied to David and Charles Koch, the billionaire brothers who have played a huge role in spreading anonymous political cash around the country."

"The donation, the largest anonymous contribution to a ballot measure campaign in California history, was made to the Small Business Action Committee, a conservative group running a campaign for Proposition 32, the measure that would curb labor's ability to collect political cash, and against Proposition 30, Gov. Jerry Brown's tax-hike initiative.

'This isn't going to stop here,' said Ann Ravel, chairwoman of the Fair Political Practices Commission, the state's political watchdog. 'They admitted to money laundering. We agreed to do this without an audit because we wanted to get information to the public before the election. But we in no way agreed this would preclude further action.'"